Systems and methods for supplementing content from a server

ABSTRACT

Methods and systems to provide supplemental content to a user who is viewing video or other content. The user&#39;s device (through which he will access the video) then provides an identifier of that video to a server or other computing facility. Here, the video identifier is used to identify supplemental content that corresponds to the user&#39;s video. The supplemental content is then provided to the user device for the user&#39;s consumption. The supplemental content may be structured in such a way that pieces of the supplemental content are accessible at particular points in the video. The piece(s) of the supplemental content available at a particular point in the video will be related to one or more objects that are present at this point. This allows a user to access one or more pieces of supplemental content in a context-specific manner, at a point in the video where the piece(s) of supplemental content are relevant.

BACKGROUND

While consuming content, a user may wish to access additional related content. This may be motivated by a desire to learn more about the subject of the content or about something mentioned therein, for example.

In the context of written articles, this can be addressed using hypertext. When reading an article on the internet, the article may contain hyperlinks that represent avenues for the access of additional content. Clicking on a word or phrase may lead to a definition of the word, or to another article about the subject for example. Another web page may be used to present this additional information.

When viewing a video, however, the mechanisms available to the user for the access of related content are generally more limited. In the context of a web page containing a video, hyperlinks may be present elsewhere on the page, such that the user may click on these to access related content. But in other cases, such as when a user is viewing video that has been streamed or downloaded, the user currently has no convenient way to get supplemental content, such as text commentary, or related video or audio.

BRIEF DESCRIPTION OF THE DRAWINGS/FIGURES

FIG. 1 is a block diagram of an exemplary system that implements the methods described herein, according to an embodiment.

FIG. 2 is a flow chart illustrating the overall operation of systems described herein, according to an embodiment.

FIG. 3 is a flow chart illustrating operation at a user device, according to an embodiment.

FIG. 4 is a flow chart illustrating construction of layer information, according to an embodiment.

FIG. 5 is a flow chart illustrating the modification of layer information based on user input, according to an embodiment.

FIG. 6 illustrates a user interface at a user device, where the user interface allows searching in layer information, according to an embodiment.

FIG. 7 illustrates an alternative user interface at a user device, where the user interface allows searching in layer information, according to an embodiment.

FIG. 8 illustrates another alternative user interface at a user device, where the user interface allows navigation of layer information, according to an embodiment.

FIG. 9 is a block diagram illustrating a software or firmware embodiment of processing logic at a layer server, according to an embodiment.

FIG. 10 is a block diagram illustrating a software or firmware embodiment of processing logic at a user device, according to an embodiment.

In the drawings, the leftmost digit(s) of a reference number identifies the drawing in which the reference number first appears.

DETAILED DESCRIPTION

An embodiment is now described with reference to the figures, where like reference numbers indicate identical or functionally similar elements. While specific configurations and arrangements are discussed, it should be understood that this is done for illustrative purposes only. A person skilled in the relevant art will recognize that other configurations and arrangements can be used without departing from the spirit and scope of the description. It will be apparent to a person skilled in the relevant art that this can also be employed in a variety of other systems and applications other than what is described herein.

Disclosed herein are methods and systems to provide supplemental content to a user who is viewing video or other content. In an embodiment, a user may wish to watch a video. The user's device (through which he will access the video) then provides an identifier of that video to a server or other computing facility. At this facility, the video identifier is used to identify supplemental content that corresponds to the user's video. The supplemental content is then provided to the user device for the user's consumption. In an alternative embodiment, the supplemental content may be multiplexed with the video at the computing facility, such that the video and the supplemental content are provided together to the user device. The supplemental content may be structured in such a way that pieces of the supplemental content are accessible at particular points in the video. The piece(s) of the supplemental content available at a particular point in the video will be related to one or more objects that are present at this point. This allows a user to access one or more pieces of supplemental content in a context-specific manner, at a point in the video where the piece(s) of supplemental content are relevant.

An embodiment of the system described herein is illustrated in FIG. 1. Here, a playback device 110 of a user may receive data representing a video and allow the user to view the video. Such user devices may include, without limitation, a television, a set-top box (STB), a mobile computing device such as a smart phone, tablet, or wearable computer, a desktop or laptop computer, or a game console. The user device 110 is in communication with one or more services that provide supplemental content related to the video. The supplemental content may be modeled as one or more layers on top of the video, and is referred to herein as layer information. These services are shown collectively as player layer services 120. In the illustrated embodiment, the player layer services 120 include a player layer web service 130, denoted herein as a layer service for the sake of brevity. Player layer services may also include a layers database 140 for the storage of the supplemental content (i.e., layer information). Player layer services 120 may be embodied in a programmable computing device, such as a server (referred to herein as a layer server). Moreover, in an embodiment the player layer services may be located at a location remote from the user device, and may remotely service a number of users and their devices through a network 170. In an embodiment, network 170 may represent the Internet or any portion thereof.

The user device sends an identifier of the video to the player layer services 120. The video identifier may take the form of a signature unique to the video (as shown here), but more generally may be any unambiguous identifier of the video. Another example of such an identifier would be a title identification (ID). In the illustrated embodiment, the video identifier may take the form of an argument in a request 150 (GetLayers) seeking layer information. In response, the layer information specific to the video is provided to the user device 110 in message 160.

The processing described above is shown in FIG. 2, according to an embodiment. In the illustrated process, the user device receives the video at 210. At 220, the user device determines the identifier of the video. As noted above, the identifier may be a signature or other data that unambiguously denotes the video. At 230, the user device sends the video identifier to the layer service. At 240, the layer service receives the video identifier.

In response, at 250 the layer service retrieves the layer information related to the identified video. In embodiments, the layer information may be stored in a database or in some other organized fashion that allows ready access. At 260, the layer service sends the retrieved layer information to the user device. At 270, the user device receives the layer information from the layer service. At 280, the user device makes the layer service available to the user. Examples of interfaces through which the user may access the layer information will be described in greater detail below.

Note that in the above process, the receipt of the video at the user device and the receipt of the layer information are separate processes. In an alternative embodiment, these two operations may not be separate. For example, the video and the related layer information may be received simultaneously. The video and the layer information may be multiplexed together or otherwise combined, for example, and delivered together. This might be desirable if the content were to be portable. In such a case, the layer information may be multiplexed with the video when the latter is initially delivered. The format of a portable container (e.g., MP4 or MKV) could be extended so that layer information could be kept with the video. The layer information would be held in the container such that the entire container file could be moved from device to device for playback without having to access the layer service.

The video and layer information may also be combined when the content is streamed. Here, the video and layer information may be delivered from a content delivery network (CDN). Alternatively, they may be delivered separately, such that the video is sent from a CDN and the layer information is sent from a layer service.

The accessing of layer information at the user device is illustrated in FIG. 3, according to an embodiment. At 310, the user device receives a query from the user during the playing of the video. This query may take the form of an action by the user indicating his desire to access the layer information. For example, the user may click on an object that appears in the video, seeking more information about the object, where this information consists of supplemental content contained in the layer information. In this case, the click represents the query. By clicking on a particular object, the query is understood to be directed to the object or an event surrounding or related to the object, where the object or event is occupies some range of locations in each of several frames of the video. By clicking on a particular point in the video (i.e., a particular time and location in a frame), coordinates of that point are searched in the layer information. Any supplemental content associated with this location may then be read from the layer information. In other embodiments, a click may not be necessary; in such embodiments, the user may move a cursor over the object using a control device, such as a mouse or control pad. Such a “mouse-over” action would then represent the query. At 320, the user device accesses the relevant data in the layer information, i.e., data related to the object or event. At 330, the data is presented to the user. This presentation may take place in a pop-up window or other graphic for example.

If a car is shown, for instance, the user may click on the car to get more information about it. Such information would be part of the layer information, and may concern the make and model, the history of such vehicles, or may be an advertisement for the car for example and without limitation. In a film, an actor may be the object of interest, and clicking on the actor may result in learning more about the actor, such as the names of other films featuring him. In a sporting event, clicking on an object may yield information related to the object or the activity surrounding it. In a pre-recorded hockey game for example, clicking on a net during a scoring play may yield information about the play. The layer information may also include supplemental video; in the hockey example, clicking on the net may allow the user access to other video of the goal, taken from a different angle for example. Alternatively, the layer information may be in text or audio form, or may be a hyperlink through which the user may access additional information.

The construction of layering information related to a video is illustrated in FIG. 4, according to an embodiment. This construction may be performed by the content producer in conjunction with production of the content, or may be performed afterwards by the content producer, by commentator(s), or by another interested party. At 410, objects of potential interest in the video are determined. These may be persons or things about which a viewer may be curious, or about which a content producer or other party may wish to provide additional information, such as commentary or advertising. At 430, the determined objects are located in the video. The objects may be located at a particular point, e.g., at a position in time and space using a coordinate system for example; the coordinates identify a time (or time range) in the video in which the object occurs, along with a spatial location (or range thereof) in one or more frames. Such a position may be identified using a time coordinate plus x and y coordinates, or ranges thereof. Therefore, for each object of potential interest, coordinates (t, x, y) or ranges thereof are recorded at 440, representing a position of the object in the video. Note that in alternative embodiments, a third spatial coordinate (z) may also be used.

Note that a particular object may be located in different locations in different frames. To address this, one or more object tracking algorithms known to those of ordinary skill in the art may be used. Once an object's coordinates are determined in a particular frame, its coordinates in subsequent or previous frames may be generated using such an algorithm. This would allow for the determination of an object's position across a sequence frames. These coordinates would also be recorded at 440.

At 450, the coordinates of the object's position is entered into the layer information. At 460, supplemental content related to the object at this position is associated with the position. As noted above, this supplemental content may be text, video, or audio, or may be a hyperlink to such information. In an embodiment, the supplemental content may include commentary from the content producer, or may represent additional information from the producer intended as part of the artistic expression. The supplemental content may also originate from previous viewers of the video, and may include textual comments or the number of likes and/or dislikes registered by these viewers.

At 470, this supplemental content and its association with the coordinates (i.e., the mapping between the object's position and the supplemental content) are added to the layer information. In an embodiment, a descriptor of the object may also be entered and mapped to the position. The descriptor may be a text label, for example, such as “Ferrari” or “Fred Astaire.”

The layer information may be organized in any manner known to persons of ordinary skill in the art. For example, items of supplemental content may be indexed by sets of coordinates, where each set of coordinates is associated with an object at these coordinates in the video. This allows for the association of the coordinates of an object with supplemental content, and implements the mapping of supplemental content to coordinates.

In an embodiment, the user may also contribute to or update the layer information. The user may have commentary, other content, or related links to offer other viewers. A process for such input is illustrated in FIG. 5, according to an embodiment. The user may first identify an object in the video, an object about which he would like to provide input. The position (t, x, y) corresponding to the object would be captured at the user device (e.g., through the user's clicking on the object) and conveyed from the user device to the layer service, and is received there at 520. The user would then provide his commentary or other input, which would be received at the layer service at 530. The user's input may take the form of a comment, a “like” or “dislike”, or other information that the user believes may be of interest to other viewers. This input may take the form of text, audio, one or more images, video, or a link.

At 540, the position (t, x, y) would be added to the layer information of the video, and at 550 the comment or other user input would be mapped or otherwise associated with the position. At 560, the mapping (i.e., the position, the user input, and the association between the two) would be incorporated into the layer information, thereby adding to or updating the layer information. In an embodiment, the user may also provide a descriptor of the object, such as a word or phrase of text; in such a case, the descriptor would also be added to the layer information.

In an embodiment, the system described herein may provide a number of interfaces for the user. These would allow him to take advantage of the layer information and go directly to point of interest in the video, for example. One possible interface is illustrated in FIG. 6, according to an embodiment. In this example, the video becomes searchable by using the layer information. In a search window 610 the user may enter a descriptor of an object or person of interest. The user device may then scan the layer information for objects matching the descriptor. Here the user is looking for instances of Fred Astaire in the video. Search results may be shown in a results window 620, which indicates ranges of time coordinate t where Fred Astaire appears in the video. In this example, Fred Astaire appears from 1:30 to 1:45 in the video, from 2:10 to 2:30, etc. The user can then fast forward or rewind to those time ranges.

In various embodiments, other user interface designs may be used to give information to the user regarding the content of the video. In the example of FIG. 7, a graph is presented to the user, showing the number of “likes” that occur in the layer information for various times t in the video. Here, other users will have taken advantage of the feature illustrated in FIG. 5, whereby the users are permitted to add their own commentary to the layer information (likes, in this case). The present user may then see, in advance, what scenes (at time coordinates t₁, t₂, etc.) received likes, and how many likes these scenes received. The user would then be award of these scenes through user interface 700, and may then fast forward to any of these scenes by going to the appropriate t coordinate. This display represents a table of contents of sorts, showing the user where to find points in the video that were appealing to others.

The embodiment of FIG. 8 shows an example of an interface that can be made available during a viewing of the video. Here, the left portion of the display shows the video. An object 810 (a car) is visible. The user may then make a query about the object 810, by clicking on it using cursor 815. If available, layer information regarding the object 810 is made available to the user, via menu 820. Information about the object 810 is presented according to categories of information. If the user wishes to see links to information about the object 810, he can click button 822. If the user is interested in comments of other viewers regarding the object 810, he can click button 824. If he is interested in other information about the object 810, he can click button 826. Menu 820 therefore represents a table of contents for the available supplemental content that relates to the object 810.

One or more features disclosed herein may be implemented in hardware, software, firmware, and combinations thereof, including discrete and integrated circuit logic, application specific integrated circuit (ASIC) logic, and microcontrollers, and may be implemented as part of a domain-specific integrated circuit package, or a combination of integrated circuit packages. The term software, as used herein, refers to a computer program product including at least one computer readable medium having computer program logic stored therein to cause a computer system to perform one or more features and/or combinations of features disclosed herein. The computer readable medium may be transitory or non-transitory. An example of a transitory computer readable medium may be a digital signal transmitted over a radio frequency or over an electrical conductor, through a local or wide area network, or through a network such as the Internet. An example of a non-transitory computer readable medium may be a compact disk, a flash memory, or other data storage device.

In an embodiment, some or all of the processing described herein may be implemented as software or firmware. Such a software or firmware embodiment of layer service functionality is illustrated in the context of a computing system 900 in FIG. 9. System 900 includes one or more central processing unit(s) (CPU), shown as processor(s) 920, and a body of memory 910 that includes one or more non-transitory computer readable media that store computer program logic 940. Memory 910 may be implemented as a read-only memory (ROM) or random access memory (RAM) device, for example. Processor(s) 920 and memory 910 may be in communication using any of several technologies known to one of ordinary skill in the art, such as a bus or a point-to-point interconnect. Computer program logic 940 contained in memory 910 may be read and executed by processor(s) 920. In an embodiment, one or more I/O ports and/or I/O devices, shown collectively as I/O 930, may also be connected to processor(s) 920 and memory 910. In an embodiment, I/O 930 may include the communications interface to one or more user devices.

In the embodiment of FIG. 9, computer program logic 940 may include a module 950 responsible for facilitating communications with one or user devices. Such communications include the receipt of a video identifier, the sending of layer information, and the receipt of updates thereto, for example. Computer program logic 940 may also include a module 960 responsible for construction of layer information, as illustrated in FIG. 4 according to an embodiment. Computer program logic 940 may also include a module 970 responsible for updating layer information as necessary, if, for example, the user device provides user-supplied content to be added to the layer information.

A software or firmware embodiment of functionality at the user device is illustrated in the context of a computing system 1000 in FIG. 10. System 1000 includes one or more central processing unit(s), shown as processor(s) 1020, and a body of memory 1010 that includes one or more non-transitory computer readable media that store computer program logic 1040. Memory 1010 may be implemented as a read-only memory (ROM) or random access memory (RAM) device, for example. Processor(s) 1020 and memory 1010 may be in communication using any of several technologies known to one of ordinary skill in the art, such as a bus or a point-to-point interconnect. Computer program logic 1040 contained in memory 1010 may be read and executed by processor(s) 1020. In an embodiment, one or more I/O ports and/or I/O devices, shown collectively as I/O 1030, may also be connected to processor(s) 1020 and memory 1010. In an embodiment, I/O 1030 may include the communications interface to the layer service.

In the embodiment of FIG. 10, computer program logic 1040 may include a module 1050 responsible for facilitating communications with the layer service. The computer program logic 1040 may also include a layer information access module 1060 to allow the user device to read the layer information received from the layer service. As described above, the layer information or portions thereof may then be presented to the user. The computer program logic 1040 may also include a user interface module to build and display graphic interfaces (such as those shown in FIGS. 6-8) to display layer information, provide menus for this information, to receive user input, and/or allow the user to contribute to the layer information, for example.

Methods and systems are disclosed herein with the aid of functional building blocks illustrating the functions, features, and relationships thereof. At least some of the boundaries of these functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternate boundaries may be defined so long as the specified functions and relationships thereof are appropriately performed.

While various embodiments are disclosed herein, it should be understood that they have been presented by way of example only, and not limitation. It will be apparent to persons skilled in the relevant art that various changes in form and detail may be made therein without departing from the spirit and scope of the methods and systems disclosed herein. Thus, the breadth and scope of the claims should not be limited by any of the exemplary embodiments disclosed herein. 

What is claimed is:
 1. A method of supplementing content, comprising: receiving a video identifier from a user device; retrieving layer information related to a video identified by the identifier; and sending the layer information to the user device, wherein the layer information comprises supplemental content, or a link thereto, that the user device can access at particular points in the video, and wherein the receiving, retrieving, and sending are performed at a server.
 2. The method of claim 1, further comprising: building a table of contents for the layer information, wherein the table of contents identifies the particular points in the video and the supplemental content that is accessible at the particular points; and sending the table of contents to the user device.
 3. The method of claim 1, further comprising: construction of the layer information, performed before said retrieving of the layer information.
 4. The method of claim 3, wherein said construction of the layer information comprises: identifying objects of interest in the video; for each object of interest, identifying and recording one or more points in the video when the object occurs; mapping at least a portion of the supplemental content to the one or more points; and incorporating the portion of the supplemental content, or a link thereto, and the mapping into the layer information.
 5. The method of claim 4, wherein each of the particular points in the video comprises one or more of: a time coordinate of the particular point or a range thereof; an x coordinate of the particular point or a range thereof; and a y coordinate the particular point or a range thereof; wherein the x and y coordinates or ranges thereof represent a location or range thereof in one or more frames that correspond to the time coordinate or range thereof.
 6. The method of claim 1, wherein the layer information is sent to the user device separately from the video.
 7. The method of claim 1, wherein the layer information is multiplexed with the video before sending the layer information and the video to the user device.
 8. The method of claim 1, wherein the supplemental content comprises one or more of: supplemental video related to the object of interest in the video; supplemental audio related to the object of interest in the video; supplemental text related to the object of interest in the video; and a hyperlink related to the object of interest in the video.
 9. The method of claim 8, wherein the supplemental video provides an alternative perspective of the object.
 10. The method of claim 1, wherein the supplemental content comprises advertising.
 11. The method of claim 1, further comprising: receiving, from the user device, identification of a user-designated point in the video; receiving user-supplied content related to the user-designated point; mapping the user-supplied content to the user-designated point; and incorporating the user-supplied content or link thereto and the mapping into the layer information.
 12. The method of claim 11, wherein the user designated point in the video comprises one or more of: a time coordinate or range thereof; an x coordinate or range thereof; and a y coordinate or range thereof; wherein the x and y coordinates, or ranges thereof, represent a location or range thereof in one or more frames corresponding to the time coordinate or range thereof.
 13. The method of claim 11, wherein the user-supplied content comprises one or more of: supplemental video related to an object in the video corresponding to the user-designated point; supplemental audio related to the object in the video corresponding to the user-designated point; supplemental text related to the object in the video corresponding to the user-designated point; and a hyperlink related to the object in the video corresponding to the user-designated point.
 14. A computer program product for supplementing content, including a non-transitory computer readable medium having computer program logic stored therein, the computer program logic comprising: logic for receiving a video identifier from a user device; logic for retrieving layer information related to a video identified by the identifier; and logic for sending the layer information to the user device, wherein the layer information comprises supplemental content, or a link thereto, that the user device can access at particular points in the video, and wherein the receiving, retrieving, and sending are performed at a server.
 15. The computer program product of claim 14, the computer program logic further comprising: logic for building a table of contents for the layer information, wherein the table of contents identifies the particular points in the video and the supplemental content that is accessible at the particular points; and logic for sending the table of contents to the user device.
 16. The computer program product of claim 14, the computer program logic further comprising: logic for construction of the layer information, performed before said retrieving of the layer information.
 17. The computer program product of claim 16, wherein said logic for construction of the layer information comprises: logic for identifying objects of interest in the video; logic for identifying and recording, for each object of interest, one or more points in the video when the object occurs; logic for mapping at least a portion of the supplemental content to the one or more points; and logic for incorporating the portion of the supplemental content, or a link thereto, and the mapping into the layer information.
 18. The computer program product of claim 17, wherein each of the particular points in the video comprises one or more of: a time coordinate of the particular point or a range thereof; an x coordinate of the particular point or a range thereof; and a y coordinate the particular point or a range thereof; wherein the x and y coordinates or ranges thereof represent a location or range thereof in one or more frames that correspond to the time coordinate or range thereof.
 19. The computer program product of claim 14, wherein the layer information is sent to the user device separately from the video.
 20. The computer program product of claim 14, wherein the layer information is multiplexed with the video before sending the layer information and the video to the user device.
 21. The computer program product of claim 14, wherein the supplemental content comprises one or more of: supplemental video related to the object of interest in the video; supplemental audio related to the object of interest in the video; supplemental text related to the object of interest in the video; and a hyperlink related to the object of interest in the video.
 22. The computer program product of claim 21, wherein the supplemental video provides an alternative perspective of the object.
 23. The computer program product of claim 14, wherein the supplemental content comprises advertising.
 24. The computer program product of claim 14, the computer program logic further comprising: logic for receiving, from the user device, identification of a user-designated point in the video; logic for receiving user-supplied content related to the user-designated point; logic for mapping the user-supplied content to the user-designated point; and logic for incorporating the user-supplied content or link thereto and the mapping into the layer information.
 25. The computer program product of claim 24, wherein the user designated point in the video comprises one or more of: a time coordinate or range thereof; an x coordinate or range thereof; and a y coordinate or range thereof; wherein the x and y coordinates, or ranges thereof, represent a location or range thereof in one or more frames corresponding to the time coordinate or range thereof.
 26. The computer program product of claim 24, wherein the user-supplied content comprises one or more of: supplemental video related to an object in the video corresponding to the user-designated point; supplemental audio related to the object in the video corresponding to the user-designated point; supplemental text related to the object in the video corresponding to the user-designated point; and a hyperlink related to the object in the video corresponding to the user-designated point.
 27. A system for supplementing content, comprising: a processor; and a memory in communication with said processor, said memory for storing a plurality of processing instructions for directing said processor to: receive a video identifier from a user device; retrieve layer information related to a video identified by the identifier; and send the layer information to the user device, wherein the layer information comprises supplemental content, or a link thereto, that the user device can access at particular points in the video, and wherein the receiving, retrieving, and sending are performed at a server.
 28. The system of claim 27, wherein said plurality of processing instructions further direct said processor to: build a table of contents for the layer information, wherein the table of contents identifies the particular points in the video and the supplemental content that is accessible at the particular points; and send the table of contents to the user device.
 29. The system of claim 27, wherein said plurality of processing instructions further direct said processor to: construct the layer information, performed before the retrieving of the layer information.
 30. The system of claim 29, wherein the construction of the layer information comprises: identifying objects of interest in the video; for each object of interest, identifying and recording one or more points in the video when the object occurs; mapping at least a portion of the supplemental content to the one or more points; and incorporating the portion of the supplemental content, or a link thereto, and the mapping into the layer information.
 31. The system of claim 30, wherein each of the particular points in the video comprises one or more of: a time coordinate of the particular point or a range thereof; an x coordinate of the particular point or a range thereof; and a y coordinate the particular point or a range thereof; wherein the x and y coordinates or ranges thereof represent a location or range thereof in one or more frames that correspond to the time coordinate or range thereof.
 32. The system of claim 27, wherein the layer information is sent to the user device separately from the video.
 33. The system of claim 27, wherein the layer information is multiplexed with the video before sending the layer information and the video to the user device.
 34. The system of claim 27, wherein the supplemental content comprises one or more of: supplemental video related to the object of interest in the video; supplemental audio related to the object of interest in the video; supplemental text related to the object of interest in the video; and a hyperlink related to the object of interest in the video.
 35. The system of claim 34, wherein the supplemental video provides an alternative perspective of the object.
 36. The system of claim 27, wherein the supplemental content comprises advertising.
 37. The system of claim 27, wherein said plurality of processing instructions further direct said processor to: receive, from the user device, identification of a user-designated point in the video; receive user-supplied content related to the user-designated point; map the user-supplied content to the user-designated point; and incorporate the user-supplied content or link thereto and the mapping into the layer information.
 38. The system of claim 37, wherein the user designated point in the video comprises one or more of: a time coordinate or range thereof; an x coordinate or range thereof; and a y coordinate or range thereof; wherein the x and y coordinates, or ranges thereof, represent a location or range thereof in one or more frames corresponding to the time coordinate or range thereof.
 39. The system of claim 37, wherein the user-supplied content comprises one or more of: supplemental video related to an object in the video corresponding to the user-designated point; supplemental audio related to the object in the video corresponding to the user-designated point; supplemental text related to the object in the video corresponding to the user-designated point; and a hyperlink related to the object in the video corresponding to the user-designated point. 